Re: PostgreSQL clustering VS MySQL clustering

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От Darcy Buskermolen
Тема Re: PostgreSQL clustering VS MySQL clustering
Дата
Msg-id 200501201107.23964.darcy@wavefire.com
обсуждение исходный текст
Ответ на Re: PostgreSQL clustering VS MySQL clustering  (Mitch Pirtle <mitch.pirtle@gmail.com>)
Список pgsql-performance
On January 20, 2005 10:42 am, Mitch Pirtle wrote:
> On Thu, 20 Jan 2005 09:33:42 -0800, Darcy Buskermolen
>
> <darcy@wavefire.com> wrote:
> > Another Option to consider would be pgmemcache.  that way you just build
> > the farm out of lots of large memory, diskless boxes for keeping the
> > whole database in memory in the whole cluster.  More information on it
> > can be found at: http://people.freebsd.org/~seanc/pgmemcache/
>
> Which brings up another question: why not just cluster at the hardware
> layer? Get an external fiberchannel array, and cluster a bunch of dual
> Opterons, all sharing that storage. In that sense you would be getting
> one big PostgreSQL 'image' running across all of the servers.

It dosn't quite work that way, thanks to shared memory, and kernel disk cache.
(among other things)
>
> Or is that idea too 90's?  ;-)
>
> -- Mitch
>
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--
Darcy Buskermolen
Wavefire Technologies Corp.
ph: 250.717.0200
fx:  250.763.1759
http://www.wavefire.com

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